Vietnam, Quang Nam Province, Hoi An City area, Cu Lao Cham Islands (Tan Hiep Commune, Hon Lao Island), secondary dry evergreen broad-leaved forest in moist shady places near waterfalls, along streams, around point 15°57′11″N, 108°31′12″E, at elevation 390 m a.s.l., terrestrial and lithophytic herb on shady cliffs near hill top, flowers white with purple stripes, very rare, 8 III 2024, Nguyen Huu Cuong, Vo Dai Hai, Nguyen Hai Dang, NHC20240308030 (holotype VNF).